alligation

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Related to Alligation alternate: Alligation medial

al·li·ga·tion

(al-i-gā'shŭn), Do not confuse this word with allegation.
A rule of mixtures whereby 1) the cost of a mixture may be determined, given the proportions and prices of the several ingredients; or 2) in pharmacy, the relative amounts of solutions of different percentages which must be taken to form a mixture of a given strength.
[L. alligatio, fr. al-ligo (adl-), pp. -atus, to bind to]